After Chin is kidnapped by a cartel in Mexico, Five-0 must find and rescue him before he is executed by the group that’s out for revenge. Also, Grover goes undercover as a car salesman to investigate a murder that turns out to be far more complex and dangerous than expected.
Magnum and Higgins take the case of recovering the stolen urn of a woman's deceased husband, but they soon find that others believe the urn is worth killing for. Also, Rick and TC confront a man (guest star Andre Reed) who's been impresonating football legend Andre Reed.
When Nicholas Helman (Michael Des Barres) resurfaces to carry out a killing spree, the Phoenix is forced to get help from the one person who knows him best... his protégé, Murdoc.
MacGyver and Desi help a group of Syrian refugees who are being pursued by human traffickers. Also, in Los Angeles, Bozer is trapped in Oversight's car which is rigged to explode.